CN114035332B

CN114035332B - Head-up display, control method and system

Info

Publication number: CN114035332B
Application number: CN202111405454.3A
Authority: CN
Inventors: 张淑芳; 米德旺; 胡皓月; 胡甜甜; 阴山慧
Original assignee: Wuhu Automotive Prospective Technology Research Institute Co ltd; Chery Automobile Co Ltd
Current assignee: Wuhu Automotive Prospective Technology Research Institute Co ltd; Chery Automobile Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2023-04-18
Anticipated expiration: 2041-11-24
Also published as: CN114035332A

Abstract

The disclosure provides a head-up display, a control method and a system, and belongs to the technical field of display. This new line display includes: the plurality of projection devices are distributed at intervals and are respectively used for projecting a light beam carrying image information to the front windshield; the image information carried by the light beam projected by each projection device is the image information of a part of area of the target image. The method can meet the requirement of large FOV area of the head-up display, and the head-up display does not occupy more installation space in a cab.

Description

Head-up display, control method and system

Technical Field

The disclosure relates to the technical field of display, and in particular relates to a head-up display, a control method and a system.

Background

A Head Up Display (HUD) is a Display technology for projecting information of an automobile dashboard onto a front windshield by using the principle of optical reflection. The driver can also acquire the motormeter dish information when looking ahead at the in-process of driving, just so makes the driver not look at under the circumstances of panel board lowly, can acquire the panel board information rapidly, improves driving safety.

In the related art, a head-up display includes: the image generating device emits light beams with image information, the light beams are reflected by the reflector set and then are projected onto the front windshield to form images on the front windshield, and therefore a driver can observe the images in time.

However, the head-up display has a small FOV (Field of view) area and a poor display effect, and if the FOV area is increased, a mirror group with a larger size is usually required to be configured for the head-up display, which results in a larger volume of the head-up display, and is not favorable for the head-up display to be installed in a limited space of the cab.

Disclosure of Invention

The embodiment of the disclosure provides a head-up display, a control method and a system, which can meet the requirement of a large FOV area of the head-up display and enable the head-up display not to occupy more installation space in a cab. The technical scheme is as follows:

the embodiment of the disclosure provides a head-up display, which comprises a plurality of projection devices, wherein the projection devices are distributed at intervals and are respectively used for projecting a light beam carrying image information to a front windshield; the image information carried by the light beam projected by each projection device is the image information of a part of the target image.

In one implementation of the disclosed embodiment, the projection apparatus includes: the image generation assembly and the reflector set are positioned in the shell and correspond to each other one by one; the image generation assembly is used for generating the light beams, the reflector group comprises a plane mirror and a curved mirror, the plane mirror is used for reflecting the light beams generated by the image generation assembly to the curved mirror, and the curved mirror is used for reflecting the received light beams to a front windshield.

In another implementation manner of the embodiment of the disclosure, the head-up display further includes a turning member, the turning member is connected to a housing of at least one of the projection apparatuses, and the turning member is configured to drive the connected housing to rotate.

In another implementation manner of the embodiment of the disclosure, the curved mirrors of the projection apparatuses are the same in size and shape; or, the plurality of projection devices comprise at least two types, and the curved mirrors of different types of projection devices are different in size and shape.

In another implementation of the disclosed embodiment, the projection apparatus further includes a converging lens located within the housing and on a beam transmission path between the plane mirror and the image generation assembly.

In another implementation manner of the embodiment of the present disclosure, the head-up display further includes adjustment motors corresponding to the projection apparatuses one to one, each of the adjustment motors is located in a corresponding housing of the projection apparatus, and each of the adjustment motors is configured to control a curved mirror of the corresponding projection apparatus to rotate; or, the head-up display further includes adjustment motors, the adjustment motors are located outside the housings of the projection devices, the adjustment motors are used for controlling at least two of the curved mirrors to rotate synchronously, the number of the adjustment motors is less than that of the curved mirrors, and the curved mirrors driven by the adjustment motors include all the curved mirrors.

An embodiment of the present disclosure provides a control method of a head up display, where the control method is adapted to control the head up display as described above, and includes: acquiring image data of a target image; dividing the image data of the target image into a plurality of groups, wherein each group of image data corresponds to one projection device; and controlling the corresponding projection devices to generate light beams carrying image information based on each group of the image data, and projecting the light beams, wherein the image information carried by the light beams projected by the projection devices is the image information of a part of area of the target image.

In another implementation manner of the embodiment of the present disclosure, the dividing the image data of the target image into multiple groups includes: determining a target number and location of the projection devices participating in projecting a beam of light; dividing the image data of the target image into groups of the target number, wherein each group of the image data is image data corresponding to one region of the target image, and each position corresponds to one region of the target image.

In another implementation manner of the embodiment of the present disclosure, the controlling, based on each set of the image data, a corresponding projection device to generate a light beam carrying image information and project the light beam includes: and controlling the light beam projection position of each projection device on the front windshield according to the action command input by the user.

The embodiment of the present disclosure provides a head-up display system, which includes a controller and a head-up display, where the head-up display is the head-up display as described above; the controller is configured to acquire image data of a target image; dividing the image data of the target image into a plurality of groups, wherein each group of image data corresponds to one projection device; and controlling the corresponding projection devices to generate light beams carrying image information based on each group of the image data, and projecting the light beams, wherein the image information carried by the light beams projected by the projection devices is the image information of a part of the area of the target image.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the head-up display provided by the embodiment of the disclosure comprises a plurality of projection devices arranged at intervals, wherein each projection device can respectively project a light beam carrying image information to a front windshield. Meanwhile, the image information carried by the light beam emitted by each projection device is the image information of a partial area of the target image. Therefore, the purpose of respectively projecting the images of a part of areas of the same target image through a plurality of projection devices so as to form a complete target image on the front windshield is achieved.

Compared with the scheme that the whole large-size reflector group is adopted to realize projection reflection in the related technology, the head-up display is split into the plurality of projection devices with smaller sizes, partial images in target image information are projected through the plurality of projection devices respectively, the manufacturing difficulty of the reflector group can be reduced, the cost for manufacturing the reflector group is saved, and the projection devices with smaller sizes can be flexibly arranged in any area in an automobile instrument desk, so that the idle space in the instrument desk can be fully and reasonably utilized, and the space occupied for mounting the head-up display is reduced. Therefore, the requirement of the head-up display for large FOV area is met, the problem that the size of the head-up display is large due to the use of a large-size reflector group is effectively solved, and the head-up display does not occupy more installation space in a cab.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is apparent that the drawings in the description below are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings may be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a head-up display according to an embodiment of the disclosure;

fig. 2 is a schematic distribution diagram of a projection apparatus provided in an embodiment of the disclosure;

FIG. 3 is a schematic diagram of another head-up display according to an embodiment of the disclosure;

FIG. 4 is a schematic diagram illustrating the distribution positions of an image generation assembly and a reflector assembly according to an embodiment of the disclosure;

FIG. 5 is a schematic diagram of an adjustment motor coupled to a curved mirror according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of another embodiment of the present disclosure showing the connection of an adjustment motor to a curved mirror;

FIG. 7 is a schematic diagram illustrating a head-up display according to an embodiment of the disclosure;

fig. 8 is a flowchart of a control method of a head-up display according to an embodiment of the disclosure;

fig. 9 is a schematic diagram of a head-up display system according to an embodiment of the disclosure.

The various symbols in the figure are illustrated as follows:

10. a projection device; 110. a housing; 111. a projection opening; 120. an image generation component; 121. a backlight module; 122. a display panel; 130. a reflector group; 131. a plane mirror; 132. a curved mirror; 133. a converging lens; 140. a light-transmitting dustproof film;

20. a front windshield;

310. a controller; 320. adjusting the motor; 321. a rotating shaft; 322. a transmission gear; 323. a connecting gear; 330. a camera device; 340. a sound collection device; 350. a mechanical switch;

40. a steering member.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a head-up display according to an embodiment of the disclosure. As shown in fig. 1, the head-up display includes a plurality of projection devices 10, the plurality of projection devices 10 are distributed at intervals, and the plurality of projection devices 10 are respectively used for projecting a light beam carrying image information to a front windshield 20.

In the embodiment of the present disclosure, the image information carried by the light beam projected by each projection device 10 is image information of a partial area of the target image.

The target image is an image which needs to be projected and displayed on the front windshield, and the light beam carries image information used for displaying the target image, so that the target image corresponding to the image information can be formed on the front windshield after the light beam is projected. In the embodiment of the disclosure, each of the projection devices is used to project a part of the light beam, which carries image information of a part of the area in the target image, so that an image of a part of the area in the target image can be formed on the front windshield, and the projection devices are combined together to project the light beam carrying the image information of all the areas of the target image, so as to form an image of all the areas of the target image on the front windshield.

The head-up display provided by the embodiment of the disclosure comprises a plurality of projection devices arranged at intervals, wherein each projection device can respectively project a light beam carrying image information to a front windshield. Meanwhile, the image information carried by the light beam emitted by each projection device is the image information of a partial area of the target image. Therefore, the purpose of forming a complete target image on the front windshield by respectively projecting the images of partial areas of the same target image through a plurality of projection devices is achieved.

Alternatively, as shown in fig. 1, the projection apparatus 10 includes: the image generating device comprises a shell 110, an image generating assembly 120 and a reflector group 130, wherein the image generating assembly 120 and the reflector group 130 are both positioned in the shell 110, and the image generating assembly 120 corresponds to the reflector group 130 one by one.

Wherein the image generation assembly 120 is configured to generate a light beam. As shown in fig. 1, the mirror group 130 includes a flat mirror 131 and a curved mirror 132, the flat mirror 131 is used for reflecting the light beam generated by the image generation assembly 120 to the curved mirror 132, and the curved mirror 132 is used for reflecting the received light beam to the front windshield 20.

In the disclosed embodiment, each projection device 10 includes a housing 110, and an image generation assembly 120 and a mirror group 130 disposed within the housing 110. Image generation assembly 120 may emit the generated light beam with image information of a portion of the region in the target image to flat mirror 131, and flat mirror 131 receives the light beam emitted from image generation assembly 120, reflects the light beam to curved mirror 132, and finally reflects the light beam to front windshield 20 by curved mirror 132, so as to display a portion of the image information in the target image information on front windshield 20. This allows a complete image to be formed on the front windshield 20 after all of the projection devices 10 have completed projection.

Compared with the head-up display formed by directly adopting the large-size curved mirror 132, the head-up display is split into the plurality of projection devices 10 with smaller sizes, and the curved mirror 132 in each projection device 10 is also smaller in size, so that the cost for manufacturing the curved mirror 132 can be effectively saved, each projection device 10 can be flexibly arranged in any area in the instrument desk, the free space in the instrument desk can be fully and reasonably utilized, and the space occupied for installing the head-up display is reduced.

In one implementation, the curved mirrors 132 of each projection device 10 are the same size and shape. By configuring each curved mirror 132 to have the same size and shape, the same mold can be used to produce the curved mirror 132, thereby reducing the mold opening cost, and the production efficiency can be effectively improved by using the same mold to produce each curved mirror 132.

In another implementation, the plurality of projection devices 10 includes at least two types, and the curved mirrors 132 of different types of projection devices 10 are different in size and shape. Therefore, according to the size of the target image to be displayed, the curved mirrors 132 with proper size and quantity can be selected to be combined to form the curved mirror 132 with the required size, and the use is convenient. Moreover, the partially curved mirror 132 is manufactured by the same mold, which can effectively improve the production efficiency and reduce the mold opening cost.

Fig. 2 is a distribution diagram of a projection apparatus 10 according to an embodiment of the disclosure. As shown in fig. 2, the plurality of projection devices 10 are arranged in an array. Thus, the projection devices 10 can be distributed together more intensively, and the installation space occupied by the head-up display is reduced; meanwhile, the projection devices 10 can be evenly distributed, so that the projection devices 10 are prevented from being distributed too disorderly, more idle spaces are formed in the instrument desk, and the space utilization rate of the instrument desk is effectively improved.

In other implementations, the projection devices 10 may be flexibly disposed in the scattered space of the instrument desk according to the distribution of the components in the instrument desk, so as to fully and reasonably utilize the space in the instrument desk.

Fig. 3 is a schematic structural diagram of another head-up display provided in an embodiment of the disclosure. As shown in fig. 3, the mirror group 130 further includes a converging lens 133, and the converging lens 133 is located on a light beam transmission path between the plane mirror 131 and the image generation assembly 120.

By disposing the converging lens 133 between the plane mirror 131 and the image generating assembly 120, the light beam emitted from the image generating assembly 120 can be converted into a parallel light beam, and the direction of the light beam can be adjusted to make the light beam exit to the plane mirror 131 more uniformly after passing through the converging lens 133.

Illustratively, the converging lens 133 may be a converging lens. The converging lens can enable the light beams passing through the converging lens to be uniformly transmitted, and meanwhile, the converging lens can also adjust the trend of the light beams, so that the light beams can be uniformly emitted after passing through the converging lens.

As shown in fig. 3, the side wall of the housing 110 is provided with a projection opening 111, the projection opening 111 is provided with a light-transmitting dustproof film 140 for blocking the projection opening 111, and the curved mirror 132 is used for reflecting the light beam to the front windshield 20 through the projection opening 111.

In the disclosed embodiment, the projection opening 111 may be provided on the casing 110 toward the side wall of the front windshield 20, and the curved mirror 132 may be provided below the projection opening 111. The curved mirror 132 thus reflects the light beam to the front windshield 20 through the projection opening 111 to display an image.

Illustratively, the light-transmissive dustproof film 140 may be a polyester film. The entrance of dust or impurities in the air into the instrument desk can be prevented by providing the light-transmitting dustproof film 140 in the projection opening 111.

Fig. 4 is a schematic diagram illustrating a distribution position of the image generating assembly 120 and the mirror group 130 according to an embodiment of the disclosure. As shown in fig. 4, the image generating assembly 120 includes a backlight module 121 and a display panel 122, the backlight module 121 is located at the light incident surface of the display panel 122, the backlight module 121 is used for providing a surface light source to the display panel 122, and the light emergent surface of the display panel 122 faces the plane mirror 131 of the corresponding reflector set 130.

In the embodiment of the present disclosure, the backlight module 121 may be a device for providing a light source for the display panel 122, and the backlight module 121 is disposed on the light incident surface of the display panel 122, and directly forms a surface light source to provide the light source for the display panel 122.

As an example, the backlight module 121 may include a plurality of LED (Light Emitting Diode) Light beads arranged in an array, and a surface Light source emitted by each LED Light bead arranged in the array enters the display panel 122 through a Light incident surface of the display panel 122.

The display panel 122 may be a liquid crystal display panel 122, and the liquid crystal display panel 122 is configured to generate image information that needs to be displayed by the head-up display, and emit light beams carrying the image information from the liquid crystal display panel 122 to the plane mirror 131 of the reflector assembly 130 after receiving a surface light source provided by the backlight module 121.

Optionally, the head-up display further includes adjustment motors corresponding to the projection devices one to one, each adjustment motor is located in a housing of the corresponding projection device, and each adjustment motor is configured to control the curved mirror of the corresponding projection device to rotate. Therefore, the purpose of adjusting the imaging position of the head-up display on the front windshield is achieved by controlling the adjusting motor to drive the corresponding curved mirror to rotate.

FIG. 5 is a schematic diagram of an adjustment motor coupled to a curved mirror according to an embodiment of the present disclosure. As shown in fig. 5, each projection apparatus 10 is configured with an adjustment motor 320, a rotation shaft 321 is disposed on the non-reflective surface of the curved mirror 132, one end of the rotation shaft 321 is connected to the curved mirror 132, and the other end of the rotation shaft 321 is connected to the adjustment motor 320. When the adjustment motor 320 rotates, the curved mirror 132 can be driven to rotate together through the rotating shaft 321, so as to achieve the purpose of adjusting the imaging position of the head-up display system on the front windshield 20.

It should be noted that, when the curved mirrors 132 are adjusted to rotate, the controller 310 needs to calibrate and calculate the rotation angle of each curved mirror 132, so that after the positions of all the curved mirrors 132 are adjusted, the image projected by each curved mirror 132 on the front windshield 20 can still display a complete image after being spliced, and no splicing mark exists.

In other examples, the head-up display further includes adjustment motors 320, the adjustment motors 320 are located outside the housing 110 of each projection apparatus 10, the adjustment motors 320 are used for controlling the curved mirrors 132 of at least two projection apparatuses 10 to rotate synchronously, and the number of the adjustment motors 320 is less than that of the projection apparatuses 10.

Therefore, the single adjusting motor 320 drives the curved mirrors 132 of the plurality of projection devices 10 to rotate together, the purpose of synchronously rotating the curved mirrors 132 can be realized, and the manufacturing cost of the head-up display can be reduced because the number of the adjusting motors 320 is less than that of the projection devices 10 and the number of the adjusting motors 320 is reduced.

As an example, the head-up display may include a plurality of rows of projection devices spaced apart in the same direction, and each row of projection devices is spaced apart.

FIG. 6 is a schematic view of another embodiment of the present disclosure showing the connection of an adjustment motor to a curved mirror. As shown in fig. 6, the curved mirrors 132 of the projection apparatus 10 are arranged at intervals along the same direction and can be connected by a rotating shaft 321, and two ends of the rotating shaft 321 are respectively connected to two adjacent curved mirrors 132. The rotating shaft 321 connecting the two curved mirrors 132 is connected to the curved mirror 132 in the housing 110 after passing through the housing 110 of the projection apparatus 10, that is, a through hole for the rotating shaft 321 to pass through may be further formed on the side wall of the housing 110, and a bearing is installed in the through hole, so that the rotating shaft 321 is rotatably installed on the housing 110.

Illustratively, as shown in fig. 6, the head-up display system includes three rows of projection apparatuses arranged at intervals along the same direction, and a rotation shaft 321 is disposed between two adjacent curved mirrors 132 in the curved mirrors 132 of each row of projection apparatuses 10. And the curved mirror 132 of one projection device 10 located at the most peripheral position in the curved mirrors 132 of each row of projection devices 10 is connected with the transmission gears 322 through the rotating shaft 321, and two adjacent transmission gears 322 are meshed through the connecting gear 323. Moreover, the output shaft of the adjusting motor 320 is in transmission connection with one of the transmission gears 322 or the connecting gear 323 through a gear, so that when the adjusting motor 320 rotates, each transmission gear 322 can be controlled to rotate synchronously, and the rotation direction of each transmission gear 322 is ensured to be consistent, so as to achieve the purpose of adjusting the imaging position of the head-up display on the front windshield 20. Therefore, the arrangement number of the adjusting motors 320 can be greatly reduced and the cost is saved by using all the curved mirrors 132 of one adjusting motor 320.

Fig. 7 is a schematic structural diagram of a head-up display according to an embodiment of the disclosure. As shown in fig. 7, the head-up display further includes a turning member 40, the turning member 40 is connected to at least one housing 110 of the projection apparatus 10, and the turning member 40 is used for driving the connected housing 110 to rotate.

For example, as shown in fig. 7, the turning members 40 may correspond to the projection apparatus 10 one by one, the turning members 40 are disposed outside the corresponding housings 110, and the turning members 40 are connected to the housings 110. When the steering member 40 rotates, the projection device 10 can be driven to rotate, so as to change the projection direction of the projection device 10, and thus, the purpose of adjusting the imaging position of the head-up display on the front windshield 20 is achieved.

Therefore, the steering piece is arranged outside the shell and controls the shell to rotate instead of being arranged in the shell, the curved mirror is controlled to rotate, the steering piece is prevented from being arranged in the shell with a small size, the projection device can keep a small size, and the arrangement and the installation are convenient.

Illustratively, the steering member 40 may be a motor, an output shaft of which is coupled to the housing to drive the housing for rotation.

It should be noted that, in the head-up display, each projection device realizes the adjustment of the projection direction through one of the steering member and the adjustment motor.

For example, all projection devices are provided with a steering member to adjust the projection direction; or all the projection devices are provided with adjusting motors to adjust the projection direction.

For example, a part of the projection device is provided with a steering member to adjust the projection direction, and another part of the projection device is provided with a regulating motor to adjust the projection direction.

Fig. 8 is a flowchart of a control method of a head-up display according to an embodiment of the disclosure. As shown in fig. 8, the Control method may be executed by an Electronic Control Unit (ECU), and includes:

step S1: image data of a target image is acquired.

Wherein the image data is a set of grey values of each pixel expressed as a numerical value, the image data being used to instruct the projection device to generate a light beam carrying image information.

Step S2: the image data of the target image is divided into a plurality of groups, and each group of image data corresponds to one projection device.

And step S3: and controlling the corresponding projection device to generate a light beam carrying image information based on each set of image data, and projecting the light beam.

The image information carried by the light beam projected by each projection device is the image information of a partial area of the target image.

The control method divides the image data of the target image into a plurality of groups, wherein each group of image data corresponds to one projection device, and controls the corresponding projection device to generate light beams according to the image data, and the image information carried by the light beams generated by the projection devices is the image information of a part of the area of the target image. Therefore, the purpose of respectively projecting the images of a part of areas of the same target image through a plurality of projection devices so as to form a complete target image on the front windshield is achieved.

Optionally, dividing the image data of the target image into a plurality of groups includes:

determining a target number and location of projection devices participating in projecting the beam of light; dividing the image data of the target image into groups with target quantity, wherein each group of image data is image data corresponding to one area of the target image, and each position corresponds to one area of the target image.

In the embodiment of the disclosure, only part of the projection devices can be used for participating in the projection of the light beam, and on the premise of ensuring the display effect, less projection devices are used for projection as far as possible, so that the excessive projection devices are prevented from participating in the projection together, and the use efficiency of the projection devices is improved.

And the divided multiple groups of image data are respectively image data corresponding to one area of the target image, each position corresponds to one area of the target image, so that the corresponding group of image data is determined according to the position of the projection device, and each projection device projects the image of the corresponding area in the target image to form a complete target image on the front windshield.

Optionally, controlling a corresponding projection device to generate a light beam carrying image information based on each set of image data, and projecting the light beam, includes:

and controlling the light beam projection position of each projection device on the front windshield according to the action command input by the user.

The action command may include a body gesture, sound information, and a switch signal input by the user, among others.

Illustratively, the body posture may refer to a posture of at least a part of a body of the user.

As an example, if the body posture includes a picture or a video of a head-up gesture or a head-up gesture, the electronic control unit may determine that the user needs to adjust the body posture to the imaging position upward after acquiring the body posture. In order to control the target image to move upwards as a whole, the electronic control unit outputs instructions to control the adjusting motors of the projection devices or the steering pieces to move upwards to move the imaging position of the head-up display system on the front windshield.

As an example, in the process of controlling the light beam projection position of each projection device on the front windshield, if a body posture including a picture or a video of a nod is acquired, the electronic control unit may determine that the imaging position is adjusted properly by the user at this time based on the body posture, and therefore, the electronic control unit may output an instruction to control the adjustment motors or the steering members of each projection device to stop rotating so as to stop adjusting the imaging position of the head-up display system on the front windshield.

Illustratively, the sound information may be a voice of the user.

For example, if the sound information includes a voice such as an upward movement or an upward adjustment image, the electronic control unit may determine that the user needs to adjust the image position upward at this time after acquiring the sound information. In order to control the target image to move upwards as a whole, the electronic control unit outputs instructions to control the adjusting motors of the projection devices or the steering pieces to move upwards to move the imaging position of the head-up display system on the front windshield.

For example, if the sound information includes a voice such as moving down and adjusting the image downward, the electronic control unit may determine that the user needs to adjust the image downward at this time after acquiring the sound information. In order to control the whole target image to move downwards, the electronic control unit outputs instructions to control the adjusting motors of the projection devices or the steering pieces to move upwards to move the imaging position of the head-up display system on the front windshield.

As an example, in the process of controlling the light beam projection position of each projection device on the front windshield, if the sound information includes a voice of stopping, stopping movement, etc., the electronic control unit may determine that the user considers that the imaging position adjustment is appropriate at this time based on the body posture, and therefore, the electronic control unit may output an instruction to control the adjustment motor of each projection device or each steering member to stop rotating so as to stop adjusting the imaging position of the head-up display system on the front windshield.

Illustratively, the switch signal may be a command entered by a user to toggle a mechanical switch.

As an example, if the user toggles the up-shifting switch, the electronic control unit may determine that the user needs to adjust the up-shifting switch to the imaging position after acquiring the toggle condition of the mechanical switch. In order to control the target image to move upwards as a whole, the electronic control unit outputs instructions to control the adjusting motors of the projection devices or the steering pieces to move upwards to move the imaging position of the head-up display system on the front windshield.

As an example, if the user toggles the switch to move down, the electronic control unit may determine that the user needs to adjust down to the imaging position after acquiring the toggle condition of the mechanical switch. In order to control the whole target image to move downwards, the electronic control unit outputs instructions to control the adjusting motors of the projection devices or the steering pieces to move so as to move the imaging position of the head-up display system on the front windshield downwards.

As an example, if the user toggles the stop switch, the electronic control unit may determine that the imaging position is properly adjusted by the user after acquiring the toggle condition of the mechanical switch, and therefore, the electronic control unit may output an instruction to control the adjustment motors or the steering members of the projection apparatuses to stop rotating, so as to stop adjusting the imaging position of the head-up display system on the front windshield.

Fig. 9 is a schematic diagram of a head-up display system according to an embodiment of the disclosure. As shown in fig. 9, the heads-up display system includes the heads-up display and the controller described above.

Wherein the controller is configured to acquire image data of a target image; dividing image data of a target image into a plurality of groups, wherein each group of image data corresponds to one projection device; and controlling the corresponding projection device to generate a light beam carrying image information based on each set of image data, and projecting the light beam, wherein the image information carried by the light beam projected by each projection device is the image information of a part of the area of the target image.

By dividing the image data of the target image into a plurality of groups, wherein each group of image data corresponds to one projection device, and controlling the corresponding projection device to generate light beams according to the image data, the image information carried by the light beams generated by the projection devices is the image information of a part of the area of the target image. Therefore, the purpose of respectively projecting the images of a part of areas of the same target image through a plurality of projection devices so as to form a complete target image on the front windshield is achieved.

As shown in fig. 9, the controller 310 is electrically connected to the adjustment motor 320, and the controller 310 is used for controlling the adjustment motor 320 to drive each curved mirror 132 to rotate.

Illustratively, the controller 310 may be an ECU.

Optionally, the head-up display system further includes a collecting device electrically connected to the controller 310, the collecting device is configured to collect an action instruction, the action instruction is an instruction input by a user, and the controller 310 is configured to control the adjusting motor 320 to rotate according to the action instruction collected by the collecting device.

Because the controller 310 controls the adjustment motor 320 to drive the curved mirror 132 to rotate based on the motion command, the image position is adjusted. And the action command is a command input by the user. Therefore, the head-up display can flexibly adjust the imaging position of the head-up display system on the front windshield 20 by controlling the adjusting motor 320 according to the actual requirements of users, thereby improving the convenience.

Optionally, as shown in fig. 9, the acquisition device includes a camera device 330, the camera device 330 is electrically connected to the controller 310, the camera device 330 is configured to capture a body posture including a user in real time, and the controller 310 is configured to determine that the body posture is a motion instruction (i.e., an instruction input by the user) when determining that the body posture captured by the camera device 330 is a set image, and control the adjustment motor 320 to rotate according to the motion instruction.

Illustratively, the camera 330 may be a camera whose lens is oriented toward the user, and the camera is used for capturing the body posture of the user in real time.

Wherein the body gesture may be a picture or a video containing at least part of the body part of the user. For a method for controlling the light beam projection position of each projection device on the front windshield based on the body posture, reference may be made to the control method portion of the head-up display, and details are not repeated in the embodiments of the present disclosure.

Optionally, as shown in fig. 9, the control module further includes a sound collecting device 340, the sound collecting device 340 is electrically connected to the controller 310, the sound collecting device 340 is configured to record sound information of the user in real time, and the controller 310 is configured to determine that the sound information is an action instruction (i.e., an instruction input by the user) when it is determined that the sound information recorded by the sound collecting device 340 is set sound information, and control the adjustment motor 320 to rotate according to the action instruction.

Illustratively, the sound collection device 340 may be a microphone for recording the user's voice information in real time.

Wherein the sound information may be a voice containing the user. For a method for controlling the light beam projection position of each projection device on the front windshield based on the sound information, reference may be made to the control method portion of the head-up display, and details are not repeated in the embodiments of the present disclosure.

Optionally, as shown in fig. 9, the capturing device further includes a mechanical switch 350, the mechanical switch 350 is electrically connected to the controller 310, the mechanical switch 350 is configured to be toggled by a user to determine a requirement of the user to adjust the imaging position at this time, and the controller 310 controls the adjusting motor 320 of each projection device to rotate based on the toggling condition of the mechanical switch 350.

The toggle condition of the mechanical switch 350 is a switch signal, and a method for controlling the beam projection position of each projection device on the front windshield based on the switch signal can be referred to the control method of the head-up display, which is not described in detail in the embodiments of the present disclosure.

The control logic of the head-up display system shown in fig. 8 is briefly described below, and when the head-up display system is loaded and the vehicle is powered on, the head-up display system starts to operate and projects an image on the front windshield 20.

At the same time, the controller 310 collects the action commands output by the mechanical switch 350, the camera 330 and the sound collection device 340. If the action instruction is collected, it is determined that the user has a need to adjust the imaging position at this time, the controller 310 controls the adjusting motors 320 of the projection devices 10 to rotate forward or backward to adjust the imaging position of the head-up display system on the front windshield 20; if no action command is collected, it is determined that there is no need for adjusting the image position by the user at this time, and the controller 310 controls the adjustment motors 320 of the projection apparatuses 10 to stop rotating, so that the head-up display system stably projects the image on the front windshield 20.

Although the present disclosure has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure.

Claims

1. A head-up display, characterized in that the head-up display comprises a plurality of projection devices (10), the plurality of projection devices (10) are distributed at intervals, the plurality of projection devices (10) are respectively used for projecting a light beam carrying image information to a front windshield (20), each projection device (10) comprises: the instrument desk comprises a shell (110), an image generation assembly (120) and a reflector group (130), wherein the image generation assembly (120) and the reflector group (130) are both located in the shell (110), the image generation assembly (120) and the reflector group (130) are in one-to-one correspondence, and each projection device (10) determines the area of each projection device (10) in the instrument desk according to the distribution condition of all components in the instrument desk;

the image information carried by the light beams projected by the projection devices (10) is image information of a part of area of the target image;

the image generation assembly (120) is configured to generate the light beam, the mirror group (130) includes a plane mirror (131) and a curved mirror (132), the plane mirror (131) is configured to reflect the light beam generated by the image generation assembly (120) to the curved mirror (132), and the curved mirror (132) is configured to reflect the received light beam to a front windshield (20);

the head-up display further comprises adjusting motors (320), wherein the adjusting motors (320) are located outside the shells (110) of the projection devices (10), the adjusting motors (320) are used for controlling at least two curved mirrors (132) to rotate synchronously, the number of the adjusting motors (320) is less than that of the curved mirrors (132), and the curved mirrors (132) driven by the adjusting motors (320) comprise all the curved mirrors (132);

the head-up display comprises a plurality of rows of the projection devices (10) which are arranged at intervals along the same direction, each row of the projection devices (10) are arranged at intervals, through holes are formed in the side wall of the shell (110) of each projection device (10), the curved mirrors (132) in each projection device (10) which are arranged at intervals along the same direction are connected through a rotating shaft (321), and two ends of each rotating shaft (321) penetrate through the through holes of two adjacent shells (110) respectively and are connected with two adjacent curved mirrors (132);

the curved mirror (132) of one projection device (10) located at the most marginal position in the curved mirrors (132) of each row of projection devices (10) is connected with the transmission gears (322) through the rotating shaft (321), two adjacent transmission gears (322) are meshed through the connecting gear (323), and the output shaft of the adjusting motor (320) is in transmission connection with one of the transmission gears (322) or the connecting gear (323) through the gear.

2. The heads-up display of claim 1 wherein the curved mirror (132) of each projection device (10) is the same size and shape; or,

the plurality of projection devices (10) includes at least two types, and the curved mirrors (132) of different types of projection devices (10) differ in size and shape.

3. The heads-up display of claim 1, wherein the projection device (10) further comprises a converging lens (133), the converging lens (133) being located within the housing and in a beam path between the planar mirror (131) and the image generation assembly (120).

4. A method of controlling a head-up display, the method being adapted to control the head-up display of any of claims 1 to 3, comprising:

acquiring image data of a target image;

dividing the image data of the target image into a plurality of groups, wherein each group of image data corresponds to one projection device;

and controlling the corresponding projection devices to generate light beams carrying image information based on each group of the image data, and projecting the light beams, wherein the image information carried by the light beams projected by the projection devices is the image information of a part of area of the target image.

5. The control method according to claim 4, wherein the dividing the image data of the target image into a plurality of groups includes:

determining a target number and position of the projection devices participating in projecting the light beam;

dividing the image data of the target image into groups of the target number, wherein each group of the image data is image data corresponding to one area of the target image, and each position corresponds to one area of the target image.

6. The control method according to claim 5, wherein controlling the corresponding projection device to generate a light beam carrying image information based on each set of the image data and project the light beam includes:

and controlling the light beam projection position of each projection device on the front windshield according to an action command input by a user.

7. A heads-up display system comprising a controller and a heads-up display, the heads-up display being as claimed in any one of claims 1 to 3;

the controller is configured to acquire image data of a target image; dividing the image data of the target image into a plurality of groups, wherein each group of image data corresponds to one projection device; and controlling the corresponding projection devices to generate light beams carrying image information based on each group of the image data, and projecting the light beams, wherein the image information carried by the light beams projected by the projection devices is the image information of a part of area of the target image.